| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk having a reflection film to be deposited on a pit comprising silver (or a silver alloy) and aluminum (or an aluminum alloy) when irregularities of the pit are reverse to usual ones and to provide an optical disk device using the optical disk. <P>SOLUTION: In the optical disk in which information is recorded by a pit-shaped pattern and which includes the reflection film, the reflection film has a two layer structure of a first layer 50 and a second layer 52 different from the first layer 50, the material of the first layer 50 is aluminum, the aluminum alloy, or an aluminum oxide and the second layer comes into contact with an upper part of the first layer and the material of the second layer is silver or the silver alloy. <P>COPYRIGHT: (C)2008,JPO&INPIT |
